JP2011144581A - Water discharge device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a water discharge device for discharging air-bubble-containing water mixed with air, capable of enhancing satisfaction in washing feeling even when less quantity of water is supplied. <P>SOLUTION: A regional washing device WA which is a water discharge device includes an air-mixing chamber 16 arranged between a throttle part 14 and a discharge hole 18, and is provided with an opening 20 which introduces air to the air-mixing chamber 16. The air-mixing chamber 16 is structured so that the air introduced from the opening 20 is mixed with the water inside to make the air-bubble-containing water, and that the air-bubble-containing water and the water injected from the throttle part 14 and directly passing through the discharge hole 18 are joined together to be discharged from the discharging hole 18. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a water discharge device that discharges air mixed with air mixed with air.

  As a water discharge device for cleaning the human body, there are a shower water discharge device that discharges water to a wide part of the body and a local cleaning device that discharges water to a local part of the body, both of which are required to achieve both improvement in cleaning power and satisfaction of cleaning . A feeling of washing is satisfied by achieving a feeling of stimulation and a feeling of volume at a certain level, and if simply considered, it is achieved by discharging a large amount of water vigorously. However, from the viewpoint of saving water, which has been emphasized in recent years, it is required to reduce the amount of water as much as possible to raise the feeling of stimulation and the volume to a certain level.

  The human body local cleaning device described in the following Patent Document 1 is an example of a water discharge device proposed from such a viewpoint, and discharges bubble-containing water mixed with air. Specifically, it is a human body local cleaning device including a human body local cleaning nozzle that has a water supply channel and jets cleaning water to the human body local part, and is an orifice unit that is formed in the water supply channel and has an outlet directed to the human body local unit And an air inlet provided around the orifice portion, and a throat portion provided on a locus connecting the outlet of the orifice portion and the human body local portion. The throat part has gas-liquid mixing means that mixes the air sucked from the air intake with the washing water jetted from the outlet of the orifice part, and generates a peak load at a period that is too fast for the human body to sense in the human body part. It is.

JP 2002-155567 A

  The human body local cleaning device described in Patent Document 1 can achieve both a sense of stimulation and a sense of volume if a certain amount of water is ensured, and sufficiently achieves its purpose as compared to the previous water discharge device. Is. However, the water-saving device required for the water discharging device including the human body local cleaning device has become more advanced, and the conventional technology has not been able to satisfy the requirement sufficiently.

  The present invention has been made in view of such a problem, and an object of the present invention is a water discharge device that discharges air-mixed water in which air is mixed, and satisfies a feeling of cleaning even when the amount of supplied water is further reduced. It is in providing the water discharging apparatus which can do.

  In order to solve the above-described problem, a water discharge device according to the present invention is a water discharge device that discharges bubble-containing water mixed with air, and includes a water supply unit for supplying water and water supplied from the water supply unit. A speed increasing means for speeding up the water, an injection hole for injecting the water accelerated by the speed increasing means to the downstream side, and provided on the downstream side of the injection hole. A discharge hole for directly passing and discharging at least a part of the water injected from the injection hole while maintaining the injection direction; and an aeration chamber provided between the injection hole and the discharge hole. Provided with an opening for introducing air into the aeration chamber, wherein the aeration chamber mixes the air introduced from the opening into water therein to form bubble-containing water, Water sprayed from the spray holes and directly passing through the discharge holes; Merging is allowed, characterized in that it is configured to discharge from the discharge hole.

  According to the water discharge device of the present invention, the discharge hole is configured to pass through and discharge at least a part of the water that is accelerated by the speed increasing means and that is injected from the injection hole while maintaining its injection direction. Therefore, the water discharged from the discharge hole is injected to the outside without removing the momentum injected from the injection hole. Therefore, if the discharge hole is arranged so as to be directed to the portion of the human body where water should be applied, water discharge with a sense of stimulation for the human body can be realized. Further, since the air mixing chamber is provided between the injection hole and the discharge hole, and an opening for introducing air into the air mixing chamber is also provided, air can be reliably mixed into the water in the air mixing chamber. it can. Specifically, when water is ejected from the ejection holes, the surrounding area becomes negative pressure, and air is sucked into the water by the so-called ejector effect, and bubble mixed water is generated. At the time of the generation of the bubble mixed water by the ejector effect, water is present in the air mixed chamber connected to the injection hole, but air is easily introduced from the opening into the air mixed chamber due to the negative pressure in the air mixed chamber. Therefore, water and air necessary for the generation of bubble-containing water are always supplied, and an environment in which the ejector effect is likely to be generated is formed. Therefore, even if the amount of supplied water is small, bubbles containing a large amount of air The mixed water can be reliably generated. Since the bubble-containing water generated in this way is configured to be merged with water that is injected from the injection hole and directly passes through the discharge hole and is discharged from the discharge hole, A large amount of water discharge can be realized. Therefore, even when the amount of water is low, it is possible to achieve both a feeling of volume and a feeling of stimulation, and a high feeling of washing can be obtained.

  The speed increasing means is provided between the water supply section and the bubble mixing chamber, and is connected to a throttle section having a smaller flow path cross-sectional area than the water supply section and the bubble mixing chamber or to the water supply section to add water. A pressure pump or the like can be used.

  Further, in the water discharge device according to the present invention, the injection hole and the discharge hole are configured to directly pass a part of the water injected from the injection hole while maintaining the injection direction and discharge from the discharge hole. The aeration chamber is for introducing water into the inside of the remaining portion of the water ejected from the ejection hole, and the air introduced from the opening is ejected through the ejection hole. The water is mixed with water to form bubble mixed water, and the bubble mixed water and water jetted from the jet holes and directly passing through the discharge holes are merged and discharged from the discharge holes. Is also preferable.

  In this preferred embodiment, a part of the water ejected from the ejection hole is ejected as it is from the ejection hole, and the remainder of the water ejected from the ejection hole is accumulated in the aeration chamber to become bubble-mixed water. Therefore, it is not necessary to separately supply water to be introduced into the aeration chamber, and it is possible to realize water discharge with a feeling of volume due to the bubbling water with a simple configuration.

  In the water discharge device according to the present invention, the remaining portion of the water injected from the injection hole is advanced in the aeration chamber so that a swirling flow is generated in the air mixing chamber due to the remaining portion of the water injected from the injection hole. It is also preferable that a direction changing means for changing the direction is provided.

  In this preferred embodiment, the advancing direction of the remaining portion of the water ejected from the ejection holes is changed so that a swirl flow is generated in the aeration chamber, so that the bubbling water stays in a part of the aeration chamber. In other words, it is possible to avoid the bubbles in the bubble-containing water from being combined and growing. Therefore, it is possible to discharge the bubble mixed water in which bubbles of the same size are dispersed without causing the bubbles to be unevenly distributed by joining the water discharged from the injection holes as it is. It is possible to realize water discharge with a feeling of volume due to water mixed with bubbles.

  Moreover, in the water discharging apparatus which concerns on this invention, it is also preferable that the said direction change means is comprised so that the advancing direction of the remaining part of the water injected from the said injection hole may contact | win the inner wall of the said discharge hole periphery.

  In this preferred embodiment, the remaining direction of the water ejected from the injection hole hits the inner wall around the discharge hole and the traveling direction thereof is changed, so the traveling direction of the remaining part of the water ejected from the ejection hole is changed. There is no need to provide a separate member or the like, and it is possible to realize water discharge with a feeling of volume due to water mixed in with a simple structure.

  Moreover, in the water discharging apparatus which concerns on this invention, the said direction change means is extended from the inner wall around the said discharge hole toward the said injection hole so that the advancing direction of the remaining part of the water injected from the said injection hole may be changed. It is also preferable that it is composed of an exit wall.

  In this preferable aspect, the extending wall extending from the inner wall around the discharge hole toward the injection hole is configured so that the traveling direction of the remaining portion of the water injected from the injection hole is changed. The traveling direction of the remaining water can be reliably changed with a simple configuration, and a water discharge with a feeling of volume due to the bubble mixed water can be realized.

  Further, in the water discharge device according to the present invention, a water supply port for supplying water into the aeration chamber is provided separately from the injection hole, and the aeration chamber mixes air introduced from the opening into the water therein. It is also preferable that the air is mixed with bubble mixed water, and the bubble mixed water and the water jetted from the spray hole and directly passing through the discharge hole are merged and discharged from the discharge hole.

  In this preferred embodiment, since the water supply port for supplying water into the aeration chamber is provided separately from the injection hole, not only when a part of the water injected from the injection hole is directly injected from the discharge hole, the injection is performed. Even when all of the water jetted from the hole is jetted from the discharge hole as it is, water can be reliably introduced into the aeration chamber. Accordingly, water injected from the injection hole is injected from the discharge hole in an optimal state so as to satisfy a sense of irritation, while water is supplied from the water supply port into the aeration chamber and the water is supplied to the aeration chamber. By introducing it, it becomes possible to reliably jet the bubble-containing water, and it is possible to realize water discharge with a feeling of volume due to the bubble-containing water in addition to the stimulation.

  Moreover, in the water discharging apparatus which concerns on this invention, it is also preferable that the said injection hole and the said discharge hole are arrange | positioned so that the central axis of the said injection hole and the central axis of the said discharge hole may be located on the substantially same straight line.

  In this preferable aspect, since the injection hole and the discharge hole are arranged so that the central axis of the injection hole and the central axis of the discharge hole are located on substantially the same straight line, at least one of the water injected from the injection hole. The portion can be discharged without fail to remove the momentum. Therefore, it is possible to realize water discharge that secures a feeling of stimulation in addition to a sense of volume.

  Moreover, in the water discharging apparatus which concerns on this invention, the said opening is arrange | positioned so that air may be introduce | transduced in the said air mixing chamber in the position most distant from the said injection hole, and the direction of the air introduce | transduced into the said air mixing chamber from the said opening Is preferably configured to be in a direction opposite to the direction of water injected from the injection hole.

  In this preferred embodiment, since the opening for introducing air into the aeration chamber is formed at a position farthest from the injection hole, the direct influence of water injected from the injection hole is reduced, and aeration The amount of air introduced into the room can be stabilized. In addition, when a swirl flow is generated in the aeration chamber, the effect of stabilizing the swirl flow is also exhibited. Furthermore, since the direction of the air introduced from the opening into the aeration chamber is opposite to the direction of the water injected from the injection hole, bubbles are mixed with the water injected from the injection hole. Air can be prevented from being discharged before it becomes water. Accordingly, it is possible to stabilize the amount of air mixed into the bubble mixed water generated in the air mixed chamber, and it is possible to stably realize water discharge with a feeling of volume due to the bubble mixed water.

  Moreover, in the water discharging apparatus which concerns on this invention, it is also preferable that the said air mixing chamber is formed in the flat shape by which the direction of the water injected from the said injection hole becomes a major axis.

  In this preferred embodiment, the cross section of the aeration chamber is formed in a flat shape in which the direction of water ejected from the injection hole is a major axis, so that the flow of water in the direction of water ejected from the injection hole Can be stabilized. Therefore, it is possible to more smoothly merge the bubble-mixed water and the water sprayed from the spray holes, and it is possible to stably realize uniform water discharge with the bubble-mixed water.

  Moreover, in the water discharging apparatus which concerns on this invention, it is also preferable that the said discharge hole provides the throttle protrusion in the said aeration chamber side.

  In this preferred embodiment, the throttle protrusion is provided on the side of the air mixing chamber of the discharge hole, so that the flow of water that is joined by the water injected from the injection hole and the bubble mixed water flows into the discharge hole after passing through the throttle protrusion. A negative pressure is generated in Due to the negative pressure, the water flow is repeatedly drawn to the inner wall of the discharge hole. Thereby, the water discharged from the discharge hole is discharged while swinging around the discharge direction. Therefore, the discharged water can be made into a droplet state at an early stage, and a high stimulation feeling can be obtained. Moreover, the washing area can be expanded by swinging.

  ADVANTAGE OF THE INVENTION According to this invention, it is a water discharging apparatus which discharges the bubble mixed water which mixed air, Comprising: Even if it reduces the amount of supplied water more, the water discharging apparatus which can satisfy a washing | cleaning feeling can be provided.

It is sectional drawing which shows the principal part of the local cleaning apparatus which concerns on 1st embodiment of this invention. It is sectional drawing which shows the AA cross section of FIG. It is sectional drawing which shows the principal part of the local cleaning apparatus which concerns on 2nd embodiment of this invention. It is sectional drawing which shows the principal part of the local cleaning apparatus which concerns on 3rd embodiment of this invention. It is sectional drawing which shows the principal part of the local cleaning apparatus which concerns on 4th embodiment of this invention. It is sectional drawing which shows the principal part of the local cleaning apparatus which concerns on 5th embodiment of this invention. It is sectional drawing which shows the principal part of the shower water discharging apparatus which concerns on 6th embodiment of this invention. It is sectional drawing which expands and shows one water discharge hole vicinity of the shower water discharging apparatus shown in FIG. It is sectional drawing which shows the principal part of the shower water discharging apparatus which concerns on 7th embodiment of this invention. It is sectional drawing which shows the principal part of the local cleaning apparatus which concerns on the modification of 1st embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In order to facilitate the understanding of the description, the same constituent elements in the drawings will be denoted by the same reference numerals as much as possible, and redundant description will be omitted.

  A local cleaning device as a water discharging device according to a first embodiment of the present invention will be described with reference to FIG. FIG. 1 is a cross-sectional view showing a main part of a local cleaning device WA according to the first embodiment of the present invention. The local cleaning device WA shown in FIG. 1 shows a nozzle portion of the local cleaning device WA. As the local cleaning device WA, a toilet seat, a heater for increasing the temperature of water, and the momentum of water It has a mechanism such as a pump for increasing the pressure. In the description with reference to FIG. 1, the x-axis and the y-axis are set so as to be orthogonal to each other in a plane shape in which the paper surface of FIG. 1 extends, and the z-axis is set so as to penetrate the paper surface of FIG. The x-axis is set to be a positive direction from the left hand side to the right hand side in FIG. The y-axis is set to be a positive direction from the lower side toward the upper side toward FIG. The z-axis is set to be a positive direction from the back side to the near side in FIG.

  The local cleaning device WA includes a main body 10 and a cover 30. The main body 10 includes a water supply unit 12, a throttle unit 14, an aeration chamber 16, a discharge hole 18, and an opening 20. The water supply unit 12 is a part for supplying water to the throttle unit 14, and has an inlet 121 and an end 122. The water supply unit 12 is formed to extend in the positive direction of the x axis in the drawing. The water supply unit 12 has an inlet 121 formed at one end and an end 122 formed at the other end. The water introduced into the water supply unit 12 from the introduction port 121 flows toward the end 122. The end portion 122 is a closed end and is connected to the throttle portion 14.

  The throttle unit 14 is provided on the downstream side of the water supply unit 12, and is a part for reducing the flow passage cross-sectional area of the water supply unit 12 and increasing the speed of water passing therethrough and injecting it downstream. The throttle section 14 is configured as a flow path having a substantially circular cross section. One end of the throttle unit 14 is connected to the end 122 of the water supply unit 12. The throttle unit 14 is formed so as to extend from the end 122 of the water supply unit 12 in a positive direction of the y axis in the drawing and slightly inclined in the positive direction of the x axis in the drawing. The water supplied from the water supply unit 12 to the throttle unit 14 is jetted toward the aeration chamber 16 and the discharge hole 18 with its flow velocity increased. In the present embodiment, the throttle portion 14 corresponds to speed increasing means, and the other end portion of the throttle portion 14 corresponds to an injection hole.

  The air mixing chamber 16 is provided on the downstream side of the throttle portion 14 and between the throttle portion 14 and the discharge hole 18, and has a wider cross-sectional area than the throttle portion 14 and the discharge hole 18. Is a part that is almost satisfied. The air mixing chamber 16 includes a first wall portion 161, a second wall portion 162, a third wall portion 163, and a fourth wall portion 164. The first wall part 161 and the third wall part 163 are arranged so as to face each other and be separated from each other. The 2nd wall part 162 and the 4th wall part 164 are arrange | positioned so that it may mutually oppose and space apart. The second wall portion 162 is formed so as to connect one end side of the first wall portion 161 and one end side of the third wall portion 163. The fourth wall portion 164 is formed so as to connect the other end side of the first wall portion 161 and the other end side of the third wall portion 163. The third wall portion 163 is provided with a wall surface 1631 formed along the y-axis direction between the discharge hole 18 and the opening 20 so as to face the second wall portion 162 side.

  As described above, one end side of the throttle unit 14 is connected to the water supply unit 12. The other end side of the throttle portion 14 is connected to the first wall portion 161 of the aeration chamber 16. More specifically, the throttle portion 14 is connected to one end side of the first wall portion 161, that is, the second wall portion 162 side. The water supplied from the water supply unit 12 and jetted from the throttle unit 14 is jetted toward the third wall portion 163.

  One end side of the discharge hole 18 and one end side of the opening 20 are connected to the third wall portion 163 of the air mixing chamber 16. The discharge hole 18 is a portion that is provided on the downstream side of the throttle unit 14 and discharges a part of the water jetted from the throttle unit 14 while directly passing through the jet direction. The discharge hole 18 is configured as a flow path having a substantially circular cross section. One end side of the discharge hole 18 is connected to the third wall portion 163 of the aeration chamber 16. More specifically, the discharge hole 18 is connected to one end side of the third wall portion 163, that is, the second wall portion 162 side. The other end side of the discharge hole 18 is opened toward the outside of the main body 10. A part of the water supplied from the water supply unit 12 and jetted from the throttle unit 14 is discharged from the discharge hole 18 to the outside of the main body 10 as a main water flow WF1, passes through the discharge hole 301 of the cover 30, and the local cleaning device WA. It is injected toward the local part of the human body.

  The opening 20 is a portion for introducing air into the aeration chamber 16. The opening 20 is configured as an air flow path having a substantially circular cross section. One end of the opening 20 is connected to the third wall 163 of the aeration chamber 16. More specifically, the opening 20 is connected to the other end side of the third wall portion 163, that is, the fourth wall portion 164 side. The other end side of the opening 20 is opened toward the outside of the main body 10.

  As described above, a part of the water jetted from the throttle unit 14 into the aeration chamber 16 is jetted directly from the discharge hole 18 to the outside. Accordingly, the water jetted from the throttle portion 14 into the aeration chamber 16 is changed in the direction toward the fourth wall portion 164 by the remaining portion of the water impinging on the third wall portion 163 of the aeration chamber 16, and further the fourth wall portion 164. The direction is changed to the first wall 161 side. For this reason, the inside of the aeration chamber 16 is almost filled with the remainder of the water jetted from the throttle portion 14 into the aeration chamber 16. More specifically, the direction of the water whose direction is changed toward the fourth wall 164 when it hits the third wall 163 is changed so as to be separated from the opening 20 by the wall surface 1631 provided on the third wall 163. Since the direction in which water flows in the vicinity of the opening 20 is changed by the wall surface 1631, a space in which air remains is formed in the vicinity of the opening 20 in the aeration chamber 16. For this reason, the opening 20 serving as an air flow path is not easily blocked by water.

  When water is jetted from the throttle unit 14 into the aeration chamber 16, the vicinity thereof becomes a negative pressure, and air is sucked into the water by the so-called ejector effect to generate bubble-containing water. At the time of the generation of the bubble mixed water by the ejector effect, the air mixed chamber 16 is almost filled with water except for the vicinity of the opening 20, while the inside of the air mixed chamber 16 becomes a negative pressure so that the air mixed chamber 16 is filled. An air flow AF1 passing through the opening 20 is formed, and air is introduced from the opening 20. Therefore, bubble-containing water is continuously generated in the vicinity where water is jetted from the throttle unit 14. Since a part of the water jetted from the throttle unit 14 is discharged directly from the discharge hole 18 to the outside as the main water flow WF1, the bubble mixed water generated in the vicinity of the throttle unit 14 is the main water flow WF1 directed directly to the outside. Are discharged from the discharge hole 18 to the outside.

  In the above-described local cleaning device WA according to the present embodiment, the discharge hole 18 is configured to directly pass through and discharge a part of the water injected from the throttle unit 14 while maintaining the injection direction. The water discharged from the discharge hole 18 is sprayed to the outside without largely removing the momentum sprayed from the throttle portion 14. Therefore, if the discharge hole 18 is arranged so as to be directed to a local part of the human body, water discharge having a feeling of irritation for the human body can be realized.

  Further, in the local cleaning device WA, the air mixing chamber 16 is provided between the throttle portion 14 and the discharge hole 18, and the inside thereof is substantially filled with water, and air is introduced into the air mixing chamber 16. Since the opening 20 is also provided, air can be reliably mixed into the water filled in the air mixing chamber 16. Specifically, when water is jetted from the throttle unit 14, the surrounding area becomes negative pressure, and air is sucked into the water by the so-called ejector effect, and bubble mixed water is generated. When air bubbles mixed water is generated by the ejector effect, the air mixing chamber 16 connected to the throttle portion 14 is almost filled with water except in the vicinity of the opening 20, while the air mixing chamber 16 has a negative pressure. Air is easily introduced into the aeration chamber 16 from the opening 20. Therefore, water and air necessary for the generation of bubble-containing water are always supplied, and an environment in which the ejector effect is likely to be generated is formed. Therefore, even if the amount of supplied water is small, bubbles containing a large amount of air The mixed water can be reliably and stably generated. The bubble-containing water generated in this way is configured to be ejected from the discharge hole 18 after being joined with the main water flow WF1 that is jetted from the throttle unit 14 and directly passes through the discharge hole 18, so that in addition to the sense of irritation Thus, it is possible to realize water discharge with a feeling of volume due to water mixed with bubbles. Therefore, even when the amount of water is low, it is possible to achieve both a feeling of volume and a feeling of stimulation, and a high feeling of washing can be obtained.

  Further, in the local cleaning device WA, a part of the water jetted from the throttle unit 14 is directly discharged from the discharge hole as the main water flow WF1, and the remaining part of the water jetted from the throttle unit is almost filled in the aeration chamber 16. Since it is configured to be bubble-containing water, it is not necessary to separately supply water for filling the air-mixing chamber 16, and it is possible to realize water discharge with a feeling of volume by the bubble-containing water with a simple configuration.

  Further, in the local cleaning device WA, the water jetted from the throttle unit 14 into the aeration chamber 16 is changed in the direction toward the fourth wall portion 164 with the remaining portion hitting the third wall portion 163 of the aeration chamber 16, Furthermore, it strikes the fourth wall portion 164 and the direction is changed to the first wall portion 161 side. Therefore, a swirling water flow WF2 is generated in the aeration chamber 16. By configuring in this manner, the third wall portion 163 of the aeration chamber 16, particularly in the vicinity where the discharge hole 18 is formed, changes the direction of changing the traveling direction of the remaining portion of the water ejected from the throttle portion 14. It functions as a means. This is because the water sprayed from the throttle part 14 is diffused by maintaining the distance between the first wall part 161 to which the throttle part 14 is connected and the third wall part 163 to which the discharge hole 18 is connected. This is realized by hitting the third wall portion 163.

  In this way, the traveling direction of the remaining portion of the water jetted from the throttle portion 14 is changed, and the swirling water flow WF2 that is the flow of water returning to the main water flow WF1 is generated in the aeration chamber 16. Therefore, the bubble mixed water does not stay in a part of the air mixed chamber 16, and it is possible to avoid the bubbles in the bubble mixed water from being combined and growing. Therefore, the bubbles are not unevenly distributed, and the bubble mixed water in which bubbles of the same size are dispersed can be merged and discharged into the main water flow WF1 discharged as it is from the throttling portion 14, so that a sense of irritation can be achieved. In addition, it is possible to realize water discharge with a feeling of volume due to the bubble mixed water.

  In particular, in the present embodiment, since the remaining portion of the water ejected from the throttle portion 14 hits the third wall portion 163 that is the inner wall around the discharge hole 18, the traveling direction thereof is changed. There is no need to separately provide a member or the like for changing the traveling direction of the remaining portion of the water to be jetted, and it is possible to realize water discharge with a feeling of volume due to the bubble mixed water with a simple configuration.

  Further, in the local cleaning device WA, the throttle portion 14 and the discharge hole 18 are arranged so that the central axis of the throttle portion 14 and the central axis of the discharge hole 18 are located on substantially the same straight line. Therefore, at least a part of the water ejected from the throttle unit 14 can be discharged without fail to remove the force.

  Further, in the local cleaning device WA, the throttle portion 14 and the opening 20 are formed so as to be positioned at diagonal positions of the aeration chamber 16. As described above, since the opening 20 for introducing air into the aeration chamber 16 is formed at a position farthest from the throttle portion 14, the direct influence of water sprayed from the throttle portion 14 is reduced. Thus, the amount of air introduced into the aeration chamber 16 can be stabilized. Further, when the swirling water flow WF2 is generated in the aeration chamber 16, the effect of stabilizing the swirling water flow WF2 is also exhibited. Further, since the direction of the air introduced from the opening 20 into the aeration chamber is opposite to the direction of the water jetted from the throttle unit 14, it is accompanied by the water jetted from the throttle unit 14. Thus, it is possible to prevent the air from being discharged before the water becomes bubble mixed water. Therefore, the amount of air mixed into the bubble mixed water generated in the air mixed chamber 16 can be stabilized, and the amount of water discharged by the bubble mixed water can be stably and uniformly realized.

  Further, in the present embodiment, a throttle protrusion 181 is provided on the air mixing chamber 16 side of the discharge hole 18. Thus, by providing the throttle protrusion 181 near the inlet of the discharge hole 18, the inside of the discharge hole 18 becomes negative pressure. Therefore, when the bubble-containing water passes through the discharge hole 18, the bubble-containing water oscillates in the radial direction of the discharge hole 18 inside the discharge hole 18 due to the negative pressure. By this swinging, the water sprayed from the discharge hole 18 becomes a droplet state at an early stage after discharge. As a result, the water in the form of large droplets collides with the object to be cleaned, so the impact load at the time of collision increases, and a higher feeling of cleaning can be obtained compared to the case where a continuous flow of water collides.

  Here, FIG. 2 shows a cross-sectional view of FIG. As shown in FIG. 2, the aeration chamber 16 has a fifth wall portion 165 and a sixth wall portion 166. The fifth wall portion 165 and the sixth wall portion 166 are disposed so as to face each other and be separated from each other. The fifth wall portion 165 is formed so as to connect one end side of the first wall portion 161 in FIG. 2 and one end side of the third wall portion 163 in FIG. 2. The sixth wall portion 166 is formed so as to connect the other end side of the first wall portion 161 in FIG. 2 and the other end side of the third wall portion 163 in FIG. 2.

  In the local cleaning device WA, the distance between the fifth wall portion 165 and the sixth wall portion 166 is arranged to be shorter than the distance between the first wall portion 161 and the third wall portion 163. In addition, the distance between the fifth wall portion 165 and the sixth wall portion 166 is arranged to be shorter than the distance between the second wall portion 162 and the fourth wall portion 164 shown in FIG. Therefore, the aeration chamber 16 is formed in a flat shape whose cross-sectional shape has a major axis in the direction of water sprayed from the throttle portion 14.

  Thus, since the cross-sectional shape of the aeration chamber 16 is formed in a flat shape in which the direction of water jetted from the throttle portion 14 is the major axis, the water in the direction of water jetted from the throttle portion 14 Can stabilize the flow. Therefore, it is possible to more smoothly merge the bubble-mixed water and the water ejected from the throttle unit 14, and to realize water discharge with a sense of volume by the bubble-mixed water stably and without unevenness.

  With the local cleaning device WA configured as described above, a remarkable water-saving effect could be achieved. Specifically, the flow rate was 900 ml / min in the conventional technology in which air was directly mixed with the main water flow to obtain bubble mixed water, whereas the flow rate was reduced to two-thirds in the local cleaning device WA. Even at 600 ml / min, the same level of cleaning feeling could be obtained. With this configuration, a pump that pumps air into the wash water is unnecessary, and the cost is not increased.

  Next, a local cleaning device as a water discharging device according to a second embodiment of the present invention will be described with reference to FIG. FIG. 3 is a cross-sectional view showing a main part of the local cleaning device WAa according to the second embodiment of the present invention. The local cleaning device WAa shown in FIG. 3 shows a nozzle portion of the local cleaning device WAa. As the local cleaning device WAa, a toilet seat, a heater for increasing the temperature of water, and the momentum of water It has a mechanism such as a pump for increasing the pressure. In the description with reference to FIG. 3, the x-axis and the y-axis are set so as to be orthogonal to each other in a plane extending from the plane of FIG. 3, and the z-axis is set so as to penetrate the plane of FIG. The x-axis is set to be a positive direction from the left hand side to the right hand side in FIG. The y-axis is set to be a positive direction from the lower side to the upper side in FIG. The z axis is set to be a positive direction from the back side to the near side in FIG.

  The local cleaning device WAa includes a main body 10a and a cover (not shown in FIG. 3 and equivalent to the cover 30 shown in FIG. 1). The main body 10a includes a water supply unit 12a, a throttle unit 14a, an aeration chamber 16a, a discharge hole 18a, and an opening 20a. The water supply part 12a is a part for supplying water to the throttle part 14a, and has an inlet 121a and an end part 122a. The water supply part 12a is formed so as to extend in the positive direction of the x-axis in the drawing. The water supply unit 12a has an inlet 121a formed at one end and an end 122a formed at the other end. The water introduced into the water supply part 12a from the introduction port 121a flows toward the end part 122a. The end portion 122a is a closed end and is connected to the throttle portion 14a.

  The throttle portion 14a is a portion that is provided on the downstream side of the water supply portion 12a, and has a flow passage cross-sectional area that is smaller than that of the water supply portion 12a, and jets the passing water downstream. The throttle part 14a is configured as a flow path having a substantially circular cross section. One end side of the throttle portion 14a is connected to the end portion 122a of the water supply portion 12a. The throttle portion 14a is formed so as to extend from the end portion 122a of the water supply portion 12a toward the positive direction of the y-axis in the drawing and slightly inclined in the positive direction of the x-axis in the drawing. The water supplied from the water supply unit 12a to the throttle unit 14a is jetted toward the aeration chamber 16a and the discharge hole 18a with its flow velocity increased. In the present embodiment, the throttle portion 14a corresponds to the speed increasing means, and the other end portion of the throttle portion 14a corresponds to the injection hole.

  The air mixing chamber 16a is provided on the downstream side of the throttle portion 14a and between the throttle portion 14a and the discharge hole 18a, and has a wider cross-sectional area than the throttle portion 14a and the discharge hole 18a. Is a part that is almost satisfied. The air mixing chamber 16a has a first wall portion 161a, a second wall portion 162a, a third wall portion 163a, and a fourth wall portion 164a. The first wall portion 161a and the third wall portion 163a are disposed so as to face each other and be separated from each other. The second wall portion 162a and the fourth wall portion 164a are disposed so as to face each other and be separated from each other. The second wall portion 162a is formed to connect one end side of the first wall portion 161a and one end side of the third wall portion 163a. The fourth wall portion 164a is formed to connect the other end side of the first wall portion 161a and the other end side of the third wall portion 163a. The third wall portion 163a is provided with a wall surface 1631a formed along the y-axis direction between the discharge hole 18a and the opening 20a so as to face the second wall portion 162a.

  As described above, one end side of the throttle portion 14a is connected to the water supply portion 12a. The other end side of the throttle portion 14a is connected to the first wall portion 161a of the air mixing chamber 16a. More specifically, the throttle portion 14a is connected to one end side of the first wall portion 161a, that is, the second wall portion 162a side. The water supplied from the water supply part 12a and injected from the throttle part 14a is injected toward the third wall part 163a.

  One end side of the discharge hole 18a and one end side of the opening 20a are connected to the third wall portion 163a of the air mixing chamber 16a. The discharge hole 18a is a portion that is provided on the downstream side of the throttle portion 14a and discharges a part of the water jetted from the throttle portion 14a by directly passing it while maintaining its jet direction. The discharge hole 18a is configured as a flow path having a substantially circular cross section. One end side of the discharge hole 18a is connected to the third wall portion 163a of the aeration chamber 16a. More specifically, the discharge hole 18a is connected to one end side of the third wall portion 163a, that is, the second wall portion 162a side. The other end side of the discharge hole 18a is opened toward the outside of the main body 10a. A part of the water supplied from the water supply unit 12a and ejected from the throttle unit 14a is ejected as a main water flow from the ejection hole 18a to the outside of the main body 10a and is ejected toward a local part of the human body.

  The opening 20a is a part for introducing air into the aeration chamber 16a. The opening 20a is configured as an air flow path having a substantially circular cross section. One end side of the opening 20a is connected to the third wall portion 163a of the aeration chamber 16a. More specifically, the opening 20a is connected to the other end side of the third wall portion 163a, that is, the fourth wall portion 164a side. The other end side of the opening 20a is opened toward the outside of the main body 10a.

  As described above, a part of the water jetted from the throttle portion 14a into the aeration chamber 16a is jetted directly from the discharge hole 18a to the outside. Accordingly, the water jetted from the throttle portion 14a into the aeration chamber 16a is changed in the direction toward the fourth wall portion 164a by the remaining portion of the water hitting the third wall portion 163a of the aeration chamber 16a, and further the fourth wall portion 164a. The direction is changed to the first wall 161a side. For this reason, the inside of the aeration chamber 16a is almost filled with the remainder of the water jetted from the throttle portion 14a into the aeration chamber 16a. More specifically, the direction of the water whose direction is changed toward the fourth wall 164a when it hits the third wall 163a is changed so as to be separated from the opening 20a by the wall surface 1631a provided on the third wall 163a. Since the direction in which water flows in the vicinity of the opening 20a is changed by the wall surface 1631a, a space in which air remains is formed in the vicinity of the opening 20a in the air mixing chamber 16a. Therefore, the opening 20a serving as an air flow path is not easily blocked by water.

  When water is jetted from the throttle portion 14a into the air mixing chamber 16a, the vicinity thereof becomes negative pressure, and air is sucked into the water by the so-called ejector effect, and bubble mixed water is generated. In the generation of the bubble-containing water by the ejector effect, the aeration chamber 16a is almost filled with water except in the vicinity of the opening 20a. On the other hand, the negative pressure in the aeration chamber 16a causes the aeration chamber 16a. An air flow is formed through the opening 20a, and air is introduced from the opening 20a. Therefore, bubble mixed water is continuously generated in the vicinity where water is jetted from the throttle portion 14a. Since a part of the water jetted from the throttle part 14a is directly discharged to the outside as a main water flow from the discharge hole 18a, the bubble mixed water generated in the vicinity of the throttle part 14a joins the main water flow directed directly to the outside. Then, it is discharged from the discharge hole 18a to the outside.

  In the local cleaning device WAa, the water jetted from the throttle portion 14a into the aeration chamber 16a is changed in the direction toward the fourth wall portion 164a with the remaining portion hitting the third wall portion 163a of the aeration chamber 16a. The direction is changed to the first wall portion 161a side by hitting the four wall portions 164a. Therefore, a swirling water flow is generated in the aeration chamber 16a. With this configuration, the direction of changing the traveling direction of the remaining portion of the water jetted from the throttle portion 14a is particularly close to the third wall portion 163a of the aeration chamber 16a where the discharge hole 18a is formed. It functions as a means.

  In particular, in the local cleaning device WAa of the present embodiment, the throttle portion 14a and the discharge hole 18a are arranged so that the central axis AX1 of the throttle portion 14a and the central axis AX2 of the discharge hole 18a are shifted from each other. Specifically, the central axis AX1 of the narrowed portion 14a is disposed so as to be positioned closer to the fourth wall portion 164a than the central axis AX2 of the discharge hole 18a. Therefore, the distance between the first wall portion 161a to which the throttle portion 14a is connected and the third wall portion 163a to which the discharge hole 18a is connected is set as the first wall portion in the local cleaning device WA according to the first embodiment. Even if it is closer than the distance between 161 and the third wall portion 163, the water sprayed from the throttle portion 14a can be reliably applied to the third wall portion 163a.

  In this way, the traveling direction of the remaining portion of the water jetted from the throttle portion 14a is changed, and the swirling water flow that becomes the water flow returning to the main water flow is generated in the aeration chamber 16a. The bubble mixed water does not stay in a part of the air mixed chamber 16a, and it is possible to avoid the bubbles in the bubble mixed water from being combined and growing. Accordingly, the bubble-mixed water in which bubbles of the same size are dispersed can be merged with the main water stream discharged as it is from the throttle portion 14a and discharged without the uneven distribution of bubbles. In addition, it is possible to realize water discharge with a feeling of volume due to the bubble mixed water.

  In particular, in this embodiment, the remaining portion of the water jetted from the throttle portion 14a hits the third wall portion 163a that is the inner wall around the discharge hole 18a, and the traveling direction thereof is changed. Therefore, there is no need to separately provide a member or the like for changing the traveling direction of the remaining portion of the water ejected from the throttle portion 14a, and the simple configuration of shifting the central axis AX1 of the throttle portion 14a and the central axis AX2 of the discharge hole 18a. It is possible to realize water discharge with a feeling of volume due to water mixed with bubbles.

  Note that the configuration of the local cleaning device WAa according to the second embodiment other than the positional relationship between the throttle portion 14a and the discharge hole 18a and the positional relationship between the first wall portion 161a and the third wall portion 163a is the first embodiment. Since this is the same as the corresponding configuration of the local cleaning device WA according to the above, description of the function and effect is omitted.

  Then, the local washing | cleaning apparatus as a water discharging apparatus which concerns on 3rd embodiment of this invention is demonstrated, referring FIG. FIG. 4 is a cross-sectional view showing a main part of the local cleaning device WAb according to the third embodiment of the present invention. The local cleaning device WAb shown in FIG. 4 shows the nozzle portion of the local cleaning device WAb. The local cleaning device WAb includes a toilet seat, a heater for increasing the temperature of water, and the momentum of water. It has a mechanism such as a pump for increasing the pressure. In the description with reference to FIG. 4, the x-axis and the y-axis are set so as to be orthogonal to each other in a planar shape in which the paper surface of FIG. 4 extends, and the z-axis is set so as to penetrate the paper surface of FIG. The x-axis is set to be a positive direction from the left hand side to the right hand side in FIG. The y-axis is set to be a positive direction from the lower side to the upper side in FIG. The z-axis is set to be a positive direction from the back side to the near side in FIG.

  The local cleaning device WAb includes a main body 10b and a cover (not shown in FIG. 4 and equivalent to the cover 30 shown in FIG. 1). The main body 10b includes a water supply unit 12b, a throttle unit 14b, an aeration chamber 16b, a discharge hole 18b, and an opening 20b. The water supply part 12b is a part for supplying water to the throttle part 14b, and has an introduction port 121b and an end part 122b. The water supply unit 12b is formed to extend in the positive direction of the x-axis in the drawing. The water supply part 12b has an inlet 121b formed at one end and an end 122b formed at the other end. The water introduced into the water supply part 12b from the inlet 121b flows toward the end part 122b. The end 122b is a closed end and is connected to the throttle portion 14b.

  The throttle portion 14b is a portion that is provided on the downstream side of the water supply portion 12b, and has a flow passage cross-sectional area that is smaller than that of the water supply portion 12b and injects water that passes therethrough to the downstream side. The throttle portion 14b is configured as a flow path having a substantially circular cross section. One end side of the throttle portion 14b is connected to the end portion 122b of the water supply portion 12b. The throttle part 14b is formed so as to extend from the end part 122b of the water supply part 12b toward the positive direction of the y-axis in the figure and slightly inclined in the positive direction of the x-axis in the figure. The water supplied from the water supply unit 12b to the throttle unit 14b is jetted toward the aeration chamber 16b and the discharge hole 18b with the flow velocity increased. In the present embodiment, the throttle portion 14b corresponds to speed increasing means, and the other end portion of the throttle portion 14b corresponds to an injection hole.

  The air mixing chamber 16b is provided on the downstream side of the throttle portion 14b and between the throttle portion 14b and the discharge hole 18b, and has a wider cross-sectional area than the throttle portion 14b and the discharge hole 18b. Is a part that is almost satisfied. The air mixing chamber 16b has a first wall portion 161b, a second wall portion 162b, a third wall portion 163b, and a fourth wall portion 164b. The first wall portion 161b and the third wall portion 163b are disposed so as to face each other and be separated from each other. The second wall portion 162b and the fourth wall portion 164b are disposed so as to face each other and be separated from each other. The second wall portion 162b is formed to connect one end side of the first wall portion 161b and one end side of the third wall portion 163b. The fourth wall portion 164b is formed to connect the other end side of the first wall portion 161b and the other end side of the third wall portion 163b. The third wall portion 163b is provided with a wall surface 1631b formed along the y-axis direction between the discharge hole 18b and the opening 20b so as to face the second wall portion 162b.

  As described above, one end side of the throttle unit 14b is connected to the water supply unit 12b. The other end side of the throttle portion 14b is connected to the first wall portion 161b of the air mixing chamber 16b. More specifically, the narrowed portion 14b is connected to one end side of the first wall portion 161b, that is, the second wall portion 162b side. The water supplied from the water supply part 12b and injected from the throttle part 14b is injected toward the third wall part 163b.

  One end side of the discharge hole 18b and one end side of the opening 20b are connected to the third wall portion 163b of the air mixing chamber 16b. The discharge hole 18b is a portion that is provided on the downstream side of the throttle portion 14b, and discharges a part of the water jetted from the throttle portion 14b as a main water flow WF3 while directly passing through the jet direction. The discharge hole 18b is configured as a flow path having a substantially circular cross section. One end side of the discharge hole 18b is connected to the third wall portion 163b of the air mixing chamber 16b. More specifically, the discharge hole 18b is connected to one end side of the third wall portion 163b, that is, the second wall portion 162b side. The other end side of the discharge hole 18b is opened toward the outside of the main body 10b. A part of the water supplied from the water supply unit 12b and ejected from the throttle unit 14b is ejected as a main water flow from the ejection hole 18b to the outside of the main body 10b, and is ejected toward a local part of the human body.

  The opening 20b is a part for introducing air into the aeration chamber 16b. The opening 20b is configured as an air flow path having a substantially circular cross section. One end side of the opening 20b is connected to the third wall portion 163b of the aeration chamber 16b. More specifically, the opening 20b is connected to the other end side of the third wall portion 163b, that is, the fourth wall portion 164b side. The other end side of the opening 20b is opened toward the outside of the main body 10b.

  As described above, a part of the water jetted from the throttle portion 14b into the aeration chamber 16b is jetted to the outside directly from the discharge hole 18b as the main water flow WF3. Accordingly, the water jetted from the throttle portion 14b into the aeration chamber 16b is changed in the direction toward the fourth wall portion 164b by the remaining portion of the water impinging on the third wall portion 163b of the aeration chamber 16b, and further the fourth wall portion 164b. The direction is changed to the first wall 161b side. For this reason, the inside of the aeration chamber 16b is almost filled with the remainder of the water jetted from the throttle portion 14b into the aeration chamber 16b. More specifically, the direction of the water whose direction is changed toward the fourth wall 164b when it hits the third wall 163b is changed so as to be separated from the opening 20b by the wall surface 1631b provided on the third wall 163b. Since the direction in which water flows in the vicinity of the opening 20b is changed by the wall surface 1631b, a space in which air remains is formed in the vicinity of the opening 20b in the air mixing chamber 16b. For this reason, the opening 20b serving as an air flow path is not easily blocked by water.

  By injecting water into the air mixing chamber 16b from the throttle portion 14b, the vicinity thereof becomes negative pressure, and air is sucked into the water by a so-called ejector effect, and bubble mixed water is generated. In the generation of the bubble-containing water by the ejector effect, the aeration chamber 16b is almost filled with water except for the vicinity of the opening 20b. On the other hand, the negative pressure in the aeration chamber 16b causes the aeration chamber 16b. An air flow through the opening 20b is formed, and air is introduced from the opening 20b. Therefore, bubble mixed water is continuously generated in the vicinity where water is jetted from the throttle portion 14b. Since a part of the water jetted from the throttle unit 14b is directly discharged to the outside as the main water flow WF3 from the discharge hole 18b, the bubble-containing water generated in the vicinity of the throttle unit 14b becomes a main water flow directed directly to the outside. They are merged and discharged from the discharge hole 18b to the outside.

  In the local cleaning device WAb, the water jetted into the aeration chamber 16b from the throttle portion 14b is changed in direction toward the fourth wall portion 164b with the remaining portion hitting the third wall portion 163b of the aeration chamber 16b. The direction is changed to the first wall portion 161b side by hitting the four wall portions 164b. Therefore, a swirling water flow WF4 that is a flow of water returning to the main water flow WF3 is generated in the aeration chamber 16b. By configuring in this way, a change in the direction of changing the traveling direction of the remaining portion of the water ejected from the throttle portion 14b is particularly close to the third wall portion 163b of the aeration chamber 16b where the discharge hole 18b is formed. It functions as a means.

  In particular, in the local cleaning device WAb of the present embodiment, as a further direction changing means, the throttling is performed from the third wall portion 163b around the discharge hole 18b so that the traveling direction of the remaining water sprayed from the throttling portion 12b is changed. An extending wall 167b extending toward the portion 14b is provided. Specifically, the extending wall 167b extends from the third wall portion 163b on the fourth wall portion 164b side to the throttle portion 14b with respect to the discharge hole 18b, and is inclined toward the second wall portion 162b side. Therefore, the distance between the first wall portion 161b to which the throttle portion 14b is connected and the third wall portion 163b to which the discharge hole 18b is connected is set as the first wall portion in the local cleaning device WA according to the first embodiment. Even if it is closer than the distance between 161 and the third wall portion 163, the traveling direction of the water sprayed from the throttle portion 14b can be changed. In this manner, the extending wall 167b extending from the third wall portion 163b around the discharge hole 18b toward the throttle portion 14b is configured so that the traveling direction of the remaining portion of the water ejected from the throttle portion 12b is changed. Therefore, the traveling direction of the remaining portion of the water ejected from the throttle portion 14b can be reliably changed with a simple configuration, and water discharge with a feeling of volume due to the bubble mixed water can be realized.

  In particular, in the present embodiment, since the remaining portion of the water ejected from the throttle portion 14b hits the extending wall 167b and the traveling direction thereof is changed, the traveling direction of the remaining portion of the water ejected from the throttle portion 14b. There is no need to separately provide a member or the like for changing the amount of water, and it is possible to realize water discharge with a feeling of volume due to water mixed in with a simple structure.

  The configuration of the local cleaning device WAb according to the third embodiment other than the positional relationship between the extending wall 167b and the first wall portion 161b and the third wall portion 163b is the same as that of the local cleaning device WA according to the first embodiment. Since it is equivalent to a corresponding structure, the description about the effect is abbreviate | omitted.

  Next, a local cleaning device as a water discharging device according to a fourth embodiment of the present invention will be described with reference to FIG. FIG. 5 is a cross-sectional view showing a main part of the local cleaning device WAc according to the fourth embodiment of the present invention. The local cleaning device WAc shown in FIG. 5 shows the nozzle portion of the local cleaning device WAc. As the local cleaning device WAc, there are a toilet seat, a heater for raising the temperature of water, and the momentum of water. It has a mechanism such as a pump for increasing the pressure. In the description with reference to FIG. 5, the x-axis and the y-axis are set so as to be orthogonal to each other in a planar shape in which the paper surface of FIG. 5 extends, and the z-axis is set so as to penetrate the paper surface of FIG. The x-axis is set to be a positive direction from the left hand side to the right hand side in FIG. The y-axis is set to be a positive direction from the lower side toward the upper side in FIG. The z axis is set to be a positive direction from the back side to the near side in FIG.

  The local cleaning device WAc includes a main body 10c and a cover (not shown in FIG. 5 and equivalent to the cover 30 shown in FIG. 1). The main body 10c includes a water supply unit 12c, a throttle unit 14c, an aeration chamber 16c, a discharge hole 18c, an opening 20c, and a water supply port 22c. The water supply part 12c is a part for supplying water to the throttle part 14c, and has an inlet 121c and an end part 122c. The water supply part 12c is formed so as to extend in the positive direction of the x-axis in the drawing. The water supply unit 12c has an inlet 121c formed at one end and an end 122c formed at the other end. The water introduced into the water supply part 12c from the introduction port 121c flows toward the end part 122c. The end portion 122c is a closed end and is connected to the throttle portion 14c.

  The throttle part 14c is a part that is provided on the downstream side of the water supply part 12c, reduces the flow passage cross-sectional area more than the water supply part 12c, and injects the passing water downstream. The throttle portion 14c is configured as a flow path having a substantially circular cross section. One end side of the throttle portion 14c is connected to the end portion 122c of the water supply portion 12c. The throttle part 14c is formed so as to extend from the end 122c of the water supply part 12c toward the positive direction of the y axis in the figure and slightly inclined in the positive direction of the x axis in the figure. The water supplied from the water supply unit 12c to the throttle unit 14c is jetted toward the aeration chamber 16c and the discharge hole 18c with its flow velocity increased. In the present embodiment, the throttle portion 14c corresponds to the speed increasing means, and the other end portion of the throttle portion 14c corresponds to the injection hole.

  The air mixing chamber 16c is provided on the downstream side of the throttle portion 14c and between the throttle portion 14c and the discharge hole 18c, and has a wider cross-sectional area than the throttle portion 14c and the discharge hole 18c. Is a part that is almost satisfied. The air mixing chamber 16c has a first wall portion 161c, a second wall portion 162c, a third wall portion 163c, and a fourth wall portion 164c. The first wall portion 161c and the third wall portion 163c are disposed so as to face each other and be separated from each other. The second wall portion 162c and the fourth wall portion 164c are disposed so as to face each other and be separated from each other. The second wall portion 162c is formed to connect one end side of the first wall portion 161c and one end side of the third wall portion 163c. The fourth wall portion 164c is formed to connect the other end side of the first wall portion 161c and the other end side of the third wall portion 163c.

  As described above, one end side of the throttle portion 14c is connected to the water supply portion 12c. The other end side of the throttle portion 14c is connected to the first wall portion 161c of the air mixing chamber 16c. More specifically, the throttle portion 14 is connected to one end side of the first wall portion 161c, that is, the second wall portion 162c side. The water supplied from the water supply part 12c and injected from the throttle part 14c is injected toward the third wall part 163c.

  One end side of the discharge hole 18c and one end side of the opening 20c are connected to the third wall portion 163c of the air mixing chamber 16c. The discharge hole 18c is provided on the downstream side of the throttle portion 14c, and allows at least a part (preferably almost all) of the water jetted from the throttle portion 14c to pass directly as the main water flow WF5 while maintaining the jet direction. It is a part to do. The discharge hole 18c is configured as a flow path having a substantially circular cross section. One end side of the discharge hole 18c is connected to the third wall portion 163c of the air mixing chamber 16c. More specifically, the discharge hole 18c is connected to one end side of the third wall portion 163c, that is, the second wall portion 162c side. The other end side of the discharge hole 18c is opened toward the outside of the main body 10c. At least a part (preferably almost all) of the water supplied from the water supply part 12c and jetted from the throttle part 14c is discharged from the discharge hole 18 to the outside of the main body 10 as the main water flow WF5, toward the local part of the human body. Be injected.

  The opening 20c is a portion for introducing air into the aeration chamber 16c. The opening 20c is configured as an air flow path having a substantially circular cross section. One end of the opening 20c is connected to the third wall portion 163c of the aeration chamber 16c. More specifically, the opening 20c is connected to the other end side of the third wall portion 163c, that is, the fourth wall portion 164c side. The other end side of the opening 20c is opened toward the outside of the main body 10c.

  The water supply port 22c is a portion that supplies water into the aeration chamber 16c separately from the throttle portion 14c. The water supply port 22c is configured as a flow path having a substantially circular cross section. One end side of the water supply port 22c is connected to the third wall portion 163c of the aeration chamber 16c. More specifically, the water supply port 22c is connected to the other end side of the third wall portion 163c, that is, the fourth wall portion 164c side, in the vicinity of the opening 20c. The other end side of the water supply port 22c is connected to the water supply part 12c.

  As described above, at least a part of the water jetted from the throttle portion 14c into the aeration chamber 16c is jetted directly from the discharge hole 18c to the outside. On the other hand, water is supplied into the aeration chamber 16c from the water supply port 22c, and the aeration chamber 16c is almost filled with water.

  By injecting water into the air mixing chamber 16c from the throttle portion 14c, the vicinity thereof becomes negative pressure, and air is sucked into the water by a so-called ejector effect, and bubble mixed water is generated. During the generation of the bubble-containing water by the ejector effect, the aeration chamber 16c is almost filled with water except for the vicinity of the opening 20c, while the aeration chamber 16c has a negative pressure so that the aeration chamber 16c is filled with water. An air flow is formed through the opening 20c, and air is introduced from the opening 20c. Therefore, bubble mixed water is continuously generated in the vicinity where water is jetted from the throttle portion 14c. Since at least a part of the water jetted from the throttle part 14c is directly discharged to the outside as the main water stream WF5 from the discharge hole 18c, the bubble mixed water generated in the vicinity of the throttle part 14c is the main water stream directed directly to the outside. It merges with WF5 and is discharged to the outside from the discharge hole 18c.

  In the above-described local cleaning device WAc according to the present embodiment, the discharge hole 18c is configured to directly pass and discharge at least a part of the water jetted from the throttle unit 14c while maintaining the jet direction. Therefore, the water discharged from the discharge hole 18c is injected to the outside without largely removing the momentum injected from the throttle portion 14c. In particular, in the local cleaning device WAc, the water supply port 22c plays a role of filling water into the aeration chamber 16c, so that almost all of the water jetted from the throttle portion 14c is allowed to pass directly while maintaining its jet direction. It can be discharged. Therefore, if the discharge hole 18c is arranged so as to be directed to a local part of the human body, water discharge having a feeling of irritation for the human body can be realized.

  Further, in the local cleaning device WAc, the aeration chamber 16c is provided between the throttle portion 14c and the discharge hole 18c, and the inside thereof is substantially filled with water, and air is introduced into the aeration chamber 16c. Since the opening 20c is also provided, air can be reliably mixed into the water filled in the air mixing chamber 16c. Specifically, when water is jetted from the throttle portion 14c, the surrounding area becomes negative pressure, and air is sucked into the water by the so-called ejector effect, and bubble mixed water is generated. At that time, the water supplied from the water supply port 22c flows in a direction away from the opening 20c, so that a space in which air remains is formed in the vicinity of the opening 20c. Therefore, the opening 20c serving as the air flow path is not easily blocked by water. When air bubbles mixed water is generated by the ejector effect, the air mixing chamber 16c connected to the throttle portion 14c is almost filled with water except in the vicinity of the opening 20c, while the air mixing chamber 16c has a negative pressure. Air is easily introduced into the aeration chamber 16c from the opening 20c. Therefore, water and air necessary for the generation of bubble-containing water are always supplied, and an environment in which the ejector effect is likely to be generated is formed. Therefore, even if the amount of supplied water is small, bubbles containing a large amount of air The mixed water can be reliably and stably generated. The bubble-containing water generated in this way is configured to be ejected from the discharge hole 18c after being joined with the main water flow WF5 that is jetted from the throttle portion 14c and directly passes through the discharge hole 18c. Thus, it is possible to realize water discharge with a feeling of volume due to water mixed with bubbles. Therefore, even when the amount of water is low, it is possible to achieve both a feeling of volume and a feeling of stimulation, and a high feeling of washing can be obtained.

  Further, the local cleaning device WAc is configured such that water is supplied from the water supply port 22c into the aeration chamber 16c, and a swirling water flow WF6 is generated in the aeration chamber 16c as a water flow toward the main water flow WF5. Therefore, the bubble-containing water does not stay in a part of the air-containing chamber 16c, and it is possible to avoid the bubbles in the bubble-containing water from being combined and growing. Therefore, the bubble-mixed water in which bubbles of the same size are dispersed can be merged and discharged into the main water flow WF5 discharged as it is from the throttle portion 14c without the bubbles being unevenly distributed. In addition to the above, it is possible to realize water discharge with a feeling of volume due to water mixed in with bubbles. The water supply port 22c may be provided in the vicinity of the throttle portion 14c in the first wall portion 161c in parallel with the throttle portion 14c. In that case, it is preferable to form a wall surface 1631c on the third wall portion 163c so that the vicinity of the opening 20c is not blocked with water, as in the first to third embodiments described above.

  Note that the configuration of the local cleaning device WAc according to the fourth embodiment other than the water supply port 22c is the same as the corresponding configuration of the local cleaning device WA according to the first embodiment, and thus the description of the operational effects thereof is omitted. To do.

  A local cleaning device as a water discharging device according to a fifth embodiment of the present invention will be described with reference to FIG. FIG. 6 is a cross-sectional view showing the main part of the local cleaning device WAd according to the fifth embodiment of the present invention. The local cleaning device WAd shown in FIG. 6 shows a nozzle portion of the local cleaning device WAd. The local cleaning device WAd includes a toilet seat, a heater for increasing the temperature of water, and the momentum of water. It has a mechanism such as a pump for increasing the pressure. In the description with reference to FIG. 6, the x-axis and the y-axis are set so as to be orthogonal to each other in a plane shape in which the paper surface of FIG. 6 extends, and the z-axis is set so as to penetrate the paper surface of FIG. The x-axis is set to be a positive direction from the left hand side to the right hand side in FIG. The y-axis is set to be a positive direction from the lower side to the upper side in FIG. The z axis is set to be a positive direction from the back side to the near side in FIG.

  The local cleaning device WAd includes a main body 10d and a cover (not shown in FIG. 6 and equivalent to the cover 30 shown in FIG. 1). The main body 10d includes a water supply unit 12d, a throttle unit 14d, an aeration chamber 16d, a discharge hole 18d, and openings 20d and 21d. The water supply part 12d is a part for supplying water to the throttle part 14d, and has an inlet 121d and an end part 122d. The water supply part 12d is formed to extend in the positive direction of the x-axis in the drawing. The water supply part 12d has an inlet 121d formed at one end and an end 122d formed at the other end. Water introduced from the inlet 121d into the water supply unit 12d flows toward the end 122d. The end portion 122d is a closed end and is connected to the throttle portion 14d.

  The throttling part 14d is a part that is provided on the downstream side of the water supply part 12d, and has a channel cross-sectional area that is smaller than that of the water supply part 12d, and jets the passing water downstream. The throttle portion 14d is configured as a flow path having a substantially circular cross section. One end side of the throttle portion 14d is connected to the end portion 122d of the water supply portion 12d. The throttle portion 14d is formed so as to extend from the end portion 122d of the water supply portion 12d toward the positive direction of the y-axis in the drawing and slightly inclined in the positive direction of the x-axis in the drawing. The water d supplied from the water supply unit 12d to the throttle unit 14 is jetted toward the aeration chamber 16d and the discharge hole 18d with its flow velocity increased. In the present embodiment, the throttle portion 14d corresponds to the speed increasing means, and the other end portion of the throttle portion 14d corresponds to the injection hole.

  The air mixing chamber 16d is provided on the downstream side of the throttle portion 14d and between the throttle portion 14d and the discharge hole 18d, and has a wider cross-sectional area than the throttle portion 14d and the discharge hole 18d. Is a part that is almost satisfied. The air mixing chamber 16d has a first wall portion 161d, a second wall portion 162d, a third wall portion 163d, and a fourth wall portion 164d. The first wall portion 161d and the third wall portion 163d are disposed so as to face each other and be separated from each other. The second wall portion 162d and the fourth wall portion 164d are disposed so as to face each other and be separated from each other. The second wall portion 162d is formed to connect one end side of the first wall portion 161d and one end side of the third wall portion 163d. The fourth wall portion 164d is formed to connect the other end side of the first wall portion 161d and the other end side of the third wall portion 163d. The third wall portion 163d is provided with a wall surface 1631d formed along the y-axis direction between the discharge hole 18d and the openings 20d and 21d so as to face the second wall portion 162d. .

  As described above, one end of the throttle unit 14d is connected to the water supply unit 12d. The other end side of the throttle portion 14d is connected to the first wall portion 161d of the air mixing chamber 16d. More specifically, the throttle portion 14d is connected to the vicinity of the center of the first wall portion 161d. The water supplied from the water supply unit 12d and jetted from the throttle unit 14d is jetted toward the third wall portion 163d.

  One end side of the discharge hole 18d and one end side of the openings 20d and 21d are connected to the third wall portion 163d of the air mixing chamber 16d. The discharge hole 18d is a portion that is provided on the downstream side of the throttle portion 14d and discharges a part of the water jetted from the throttle portion 14d by directly passing it while maintaining its jet direction. The discharge hole 18d is configured as a flow path having a substantially circular cross section. One end of the discharge hole 18d is connected to the third wall portion 163d of the air mixing chamber 16d. More specifically, the discharge hole 18d is connected to the vicinity of the center of the third wall portion 163d. The other end side of the discharge hole 18d is opened toward the outside of the main body 10d. A part of the water supplied from the water supply unit 12d and ejected from the throttle unit 14d is ejected as a main water flow from the ejection hole 18d to the outside of the main body 10d and ejected toward a local part of the human body.

  The openings 20d and 21d are portions for introducing air into the aeration chamber 16d. The openings 20d and 21d are configured as air channels having a substantially circular cross section. Each of the openings 20d and 21d is connected to the third wall portion 163d of the aeration chamber 16d at one end side. More specifically, the opening 20d is connected to the other end side of the third wall portion 163d, that is, the fourth wall portion 164d side. On the other hand, the opening 21d is connected to one end side of the third wall portion 163d, that is, the second wall portion 162d side. The other ends of the openings 20d and 21d are opened toward the outside of the main body 10d.

  As described above, a part of the water jetted from the throttle portion 14d into the aeration chamber 16d is jetted directly from the discharge hole 18d to the outside. Accordingly, the water jetted from the throttle portion 14d into the aeration chamber 16d is separated so that the remaining portion hits the third wall portion 163d of the aeration chamber 16d and is divided into the second wall portion 162d side and the fourth wall portion 164d side. The direction is changed. The water flow whose direction has been changed toward the fourth wall portion 164d further strikes the fourth wall portion 164d and is changed in direction toward the first wall portion 161d. On the other hand, the water flow whose direction has been changed to the second wall 162d side further strikes the second wall 162d, and its direction is changed to the first wall 161d. Therefore, the inside of the air mixing chamber 16d is almost filled with the remaining portion of the water injected from the throttle portion 14d into the air mixing chamber 16d. More specifically, the direction of the water whose direction is changed toward the fourth wall 164d when it hits the third wall 163d is changed so as to be separated from the opening 20d by the wall surface 1631d provided on the third wall 163d. Since the direction in which water flows in the vicinity of the opening 20d is changed by the wall surface 1631d, a space in which air remains is formed in the vicinity of the opening 20d in the air mixing chamber 16. For this reason, the opening 20d serving as an air flow path is not easily blocked by water.

  By injecting water from the throttle portion 14d into the air mixing chamber 16d, the vicinity thereof becomes a negative pressure, and air is sucked into the water by a so-called ejector effect to generate bubble mixed water. During the generation of bubble-containing water by the ejector effect, the aeration chamber 16d is almost filled with water except in the vicinity of the opening 20d, while the aeration chamber 16d has a negative pressure so that the aeration chamber 16d is filled with water. An air flow is formed through the openings 20d and 21d, and air is introduced from the openings 20d and 21d. Therefore, bubble mixed water is continuously generated in the vicinity where water is jetted from the throttle portion 14d. Since a part of the water jetted from the throttle part 14d is directly discharged to the outside as a main water stream from the discharge hole 18d, the bubble mixed water generated in the vicinity of the throttle part 14d joins the main water stream directed to the outside directly. Then, it is discharged from the discharge hole 18d to the outside.

  As described above, in the local cleaning device WAd according to the present embodiment, the throttle portion 14d and the discharge hole 18d are disposed in the vicinity of the center of the air mixing chamber 18d, and the openings 20d and 21d for taking in air are associated with the throttle portion 14d. And the discharge hole 18d. Therefore, the swirl flow in the air mixing chamber 16d is stabilized, and it is possible to realize water discharge with a feeling of volume due to the bubble mixed water in addition to the feeling of stimulation. Therefore, even when the amount of water is low, it is possible to achieve both a feeling of volume and a feeling of stimulation, and a high feeling of washing can be obtained.

  The configuration of the local cleaning device WAd according to the fifth embodiment other than the mode in which the throttle portion 14d, the discharge hole 18d, and the openings 20d and 21d are arranged with respect to the air mixing chamber 16d is the local cleaning according to the first embodiment. Since the configuration is equivalent to the corresponding configuration of the device WA, the description of the function and effect is omitted.

  A shower water discharger as a water discharger according to a sixth embodiment of the present invention will be described with reference to FIG. FIG. 7: is sectional drawing which shows the principal part of the shower water discharging apparatus WAe which concerns on 6th embodiment of this invention. In the description with reference to FIG. 7, the x-axis and the y-axis are set so as to be orthogonal to each other in a plane extending from the paper surface of FIG. 7, and the z-axis is set so as to penetrate the paper surface of FIG. The x-axis is set to be a positive direction from the lower side toward the upper side toward FIG. The y-axis is set to be a positive direction from the right hand side to the left hand side toward FIG. The z axis is set to be a positive direction from the back side to the near side in FIG.

  The shower water discharger WAe is mainly configured by a main body 10e. The main body 10e includes a water supply unit 12e, a throttle unit 14e, an aeration chamber 16e, a discharge hole 18e, and an opening 20e. The water supply part 12e is a part for supplying water to the throttle part 14e, and has the inlet 121e and the edge part 122e. The water supply part 12e is formed so as to extend in the positive direction of the y-axis in the drawing. The water supply part 12e has an inlet 121e at one end and an end 122e at the other end. Water WF7 introduced from the inlet 121e into the water supply unit 12e flows toward the end 122e. A plurality of, more specifically, five throttle portions 14e are connected to the end portion 122e. Therefore, the water WF7 introduced into the water supply unit 12e from the introduction port 121e is divided and supplied to the five throttle units 14e. For convenience of explanation, the portion corresponding to one aperture 14e is enlarged and shown in FIG. Hereinafter, description will be made with reference to FIGS. 7 and 8 as appropriate.

  The throttle portion 14e is a portion that is provided on the downstream side of the water supply portion 12e, and has a channel cross-sectional area that is smaller than that of the water supply portion 12e, and jets the passing water downstream. The throttle portion 14e is configured as a flow path having a substantially circular cross section. One end side of the throttle portion 14e is connected to the end portion 122e of the water supply portion 12e. The throttle portion 14e is formed to extend from the end 122e of the water supply portion 12e in the positive direction of the y-axis in the drawing. The water supplied from the water supply unit 12e to the throttle unit 14e is jetted toward the aeration chamber 16e and the discharge hole 18e with its flow velocity increased.

  The air mixing chamber 16e is provided on the downstream side of the throttle portion 14e and between the throttle portion 14e and the discharge hole 18e, and has a wider cross-sectional area than the throttle portion 14e and the discharge hole 18e. Is a part that is almost satisfied. The aeration chamber 16e has a first wall portion 161e, a second wall portion 162e, a third wall portion 163e, and a fourth wall portion 164e. The first wall portion 161e and the third wall portion 163e are disposed so as to face each other and be separated from each other. The second wall portion 162e and the fourth wall portion 164e are disposed so as to face each other and be separated from each other. The second wall portion 162e is formed to connect one end side of the first wall portion 161e and one end side of the third wall portion 163e. The fourth wall portion 164e is formed to connect the other end side of the first wall portion 161e and the other end side of the third wall portion 163e. The third wall portion 163e is provided with a wall surface 1631e formed along the y-axis direction between the discharge hole 18e and the opening 20e so as to face the second wall portion 162e.

  As described above, one end side of the throttle unit 14e is connected to the water supply unit 12e. The other end side of the throttle portion 14e is connected to the first wall portion 161e of the air mixing chamber 16e. More specifically, the throttle portion 14e is connected to one end side of the first wall portion 161e, that is, the second wall portion 162e side. The water supplied from the water supply part 12e and injected from the throttle part 14e is injected toward the third wall part 163e. In the present embodiment, the throttle portion 14e corresponds to speed increasing means, and the other end portion of the throttle portion 14e corresponds to an injection hole.

  One end side of the discharge hole 18e and one end side of the opening 20e are connected to the third wall portion 163e of the air mixing chamber 16e. The discharge hole 18e is a portion that is provided on the downstream side of the throttle portion 14e and discharges a part of the water jetted from the throttle portion 14e by directly passing it while maintaining its jet direction. The discharge hole 18e is configured as a flow path having a substantially circular cross section. One end side of the discharge hole 18e is connected to the third wall portion 163e of the aeration chamber 16e. More specifically, the discharge hole 18e is connected to one end side of the third wall portion 163e, that is, the second wall portion 162e side. The other end side of the discharge hole 18e is opened toward the outside of the main body 10e. A part of the water supplied from the water supply unit 12e and ejected from the throttle unit 14e is ejected from the ejection hole 18e to the outside of the main body 10e as a main water flow WF8 and ejected toward the human body.

  The opening 20e is a part for introducing air into the aeration chamber 16e. The opening 20e is configured as an air flow path having a substantially circular cross section. One end side of the opening 20e is connected to the third wall portion 163e of the aeration chamber 16e. More specifically, the opening 20e is connected to the other end side of the third wall portion 163e, that is, the fourth wall portion 164e side. The other end side of the opening 20e is opened toward the outside of the main body 10e.

  As described above, a part of the water jetted from the throttle portion 14e into the aeration chamber 16e is jetted directly from the discharge hole 18e to the outside. Accordingly, the water jetted from the throttle portion 14e into the aeration chamber 16e is changed in direction toward the fourth wall portion 164e with the remaining portion hitting the third wall portion 163e of the aeration chamber 16e, and further the fourth wall portion 164e. The direction is changed to the first wall 161e side. For this reason, the inside of the aeration chamber 16e is almost filled with the remainder of the water jetted from the throttle portion 14e into the aeration chamber 16e. More specifically, the water whose direction is changed to the fourth wall portion 164e when it hits the third wall portion 163e is changed so as to be separated from the opening 20e by the wall surface 1631e provided on the third wall portion 163e. Since the direction in which water flows in the vicinity of the opening 20e is changed by the wall surface 1631e, a space in which air remains is formed in the vicinity of the opening 20e in the air mixing chamber 16e. For this reason, the opening 20e serving as an air flow path is not easily blocked by water.

  By injecting water into the air mixing chamber 16e from the throttle portion 14e, the vicinity thereof becomes negative pressure, and air is sucked into the water by the so-called ejector effect, and bubble mixed water is generated. At the time of the generation of the bubble mixed water by the ejector effect, the air mixing chamber 16e is almost filled with water except for the vicinity of the opening 20e, while the air mixing chamber 16e becomes negative pressure so that the air mixing chamber 16e becomes a negative pressure. An air flow AF2 passing through the opening 20e is formed, and air is introduced from the opening 20e. Therefore, bubble mixed water is continuously generated in the vicinity where water is jetted from the throttle portion 14e. Since a part of the water jetted from the throttle part 14e is directly discharged to the outside as the main water stream WF8 from the discharge hole 18e, the bubble mixed water generated in the vicinity of the throttle part 14e is the main water stream WF8 directed directly to the outside. And discharged from the discharge hole 18e to the outside.

  In the shower water discharger WAe according to this embodiment described above, the discharge hole 18e is configured to directly pass and discharge a part of the water jetted from the throttle portion 14e while maintaining the jet direction. The water discharged from the discharge hole 18e is sprayed to the outside without largely removing the momentum sprayed from the throttle portion 14e. Therefore, if the discharge hole 18e is arranged so as to be directed to the human body, it is possible to realize water discharge having a feeling of irritation for the human body.

  Further, in the shower water discharger WAe, the air mixing chamber 16e is provided between the throttle portion 14e and the discharge hole 18e, and the inside thereof is substantially filled with water, and air is introduced into the air mixing chamber 16e. Since the opening 20e is also provided, air can be reliably mixed into the water filled in the air mixing chamber 16e. Specifically, when water is ejected from the throttle portion 14e, the surrounding area becomes negative pressure, and air is sucked into the water by a so-called ejector effect, thereby generating bubble mixed water. When air bubbles mixed water is generated by the ejector effect, the air mixing chamber 16e connected to the throttle portion 14e is almost filled with water except in the vicinity of the opening 20, while the inside of the air mixing chamber 16e becomes negative pressure. Air is easily introduced into the aeration chamber 16e from the opening 20e. Therefore, water and air necessary for the generation of bubble-containing water are always supplied, and an environment in which the ejector effect is likely to be generated is formed. Therefore, even if the amount of supplied water is small, bubbles containing a large amount of air The mixed water can be reliably and stably generated. The bubble-containing water generated in this way is configured to be ejected from the discharge hole 18e after being joined with the main water flow WF8 that is jetted from the throttle portion 14e and directly passes through the discharge hole 18e. Thus, it is possible to realize water discharge with a feeling of volume due to water mixed with bubbles. Therefore, even when the amount of water is low, it is possible to achieve both a feeling of volume and a feeling of stimulation, and a high feeling of washing can be obtained.

  Further, in the shower water discharger WAe, a part of the water jetted from the throttle part 14e is directly discharged from the discharge hole 18e as the main water flow WF8, and the remaining part of the water jetted from the throttle part 14e is almost in the aeration chamber 16e. Since it is configured so as to be filled with bubble mixed water, it is not necessary to separately supply water for filling the air mixed chamber 16e, and it is possible to realize water discharge with a feeling of volume by the bubble mixed water with a simple configuration. it can.

  Further, in the shower water discharger WAe, the water jetted from the throttle portion 14e into the aeration chamber 16e is changed in the direction toward the fourth wall portion 164e with the remaining portion hitting the third wall portion 163e of the aeration chamber 16e, Furthermore, the direction is changed to the first wall portion 161e side when it hits the fourth wall portion 164e. Therefore, a swirling water flow WF9 is generated in the aeration chamber 16e. By configuring in this way, the third wall portion 163e of the air mixing chamber 16e, particularly in the vicinity where the discharge hole 18e is formed, changes the direction of changing the traveling direction of the remaining water jetted from the throttle portion 14e. It functions as a means. This is because the water sprayed from the throttle portion 14e is diffused by maintaining the distance between the first wall portion 161e to which the throttle portion 14e is connected and the third wall portion 163e to which the discharge hole 18e is connected. This is realized by hitting the third wall portion 163e.

  In this way, the traveling direction of the remaining portion of the water jetted from the throttle portion 14e is changed, and the swirling water flow WF9 that is the flow of water returning to the main water flow WF8 is generated in the aeration chamber 16e. Therefore, the bubble mixed water does not stay in a part of the air mixed chamber 16e, and it is possible to avoid the bubbles in the bubble mixed water from being combined and growing. Therefore, the bubble-mixed water in which bubbles of the same size are dispersed can be merged and discharged into the main water flow WF8 that is discharged as it is from the throttle portion 14e without causing the bubbles to be unevenly distributed. In addition to the above, it is possible to realize water discharge with a feeling of volume due to water mixed in with bubbles.

  In particular, in the present embodiment, since the remaining portion of the water ejected from the throttle portion 14e hits the third wall portion 163e that is the inner wall around the discharge hole 18e, the traveling direction thereof is changed. There is no need to separately provide a member or the like for changing the traveling direction of the remaining portion of the water to be jetted, and it is possible to realize water discharge with a feeling of volume due to the bubble mixed water with a simple configuration.

  Further, in the shower water discharger WAe, the throttle part 14e and the discharge hole 18e are arranged so that the central axis of the throttle part 14e and the central axis of the discharge hole 18e are located on substantially the same straight line. Therefore, at least a part of the water jetted from the throttle portion 14e can be reliably discharged without cutting off the momentum.

  Further, in the shower water discharger WAe, the throttle portion 14 e and the opening 20 e are formed so as to be positioned at diagonal positions of the aeration chamber 16. Thus, since the opening 20e for introducing air into the aeration chamber 16e is formed at a position farthest from the throttle portion 14e, the direct influence of water injected from the throttle portion 14e is reduced. Thus, the amount of air introduced into the aeration chamber 16e can be stabilized. Further, when the swirling water flow WF9 is generated in the aeration chamber 16e, the effect of stabilizing the swirling water flow WF9 is also exhibited. Furthermore, since the direction of the air introduced from the opening 20e into the aeration chamber is configured to be opposite to the direction of the water jetted from the throttle unit 14e, it is accompanied by the water jetted from the throttle unit 14e. Thus, it is possible to prevent the air from being discharged before the water becomes bubble mixed water. Accordingly, it is possible to stabilize the amount of air mixed into the bubble mixed water generated in the air mixed chamber 16e, and it is possible to stably realize water discharge with a sense of volume due to the bubble mixed water.

  Further, in the present embodiment, a throttle protrusion 181e is provided on the air mixing chamber 16e side of the discharge hole 18e. Thus, by providing the throttle protrusion 181e near the inlet of the discharge hole 18e, the inside of the discharge hole 18e becomes negative pressure. Therefore, when the bubble-containing water passes through the discharge hole 18e, the bubble-containing water is finely oscillated in the radial direction of the discharge hole 18e inside the discharge hole 18e due to the negative pressure. Due to this swinging, the water jetted from the discharge hole 18e quickly enters a droplet state. As a result, the load when the discharged water collides with the position to be cleaned increases, and the feeling of irritation is enhanced as compared with the case where the continuous flow collides.

  A shower water discharger as a water discharger according to a seventh embodiment of the present invention will be described with reference to FIG. FIG. 9 is a cross-sectional view showing the main part of the shower water discharger WAf according to the seventh embodiment of the present invention. In the description with reference to FIG. 9, the x-axis and the y-axis are set so as to be orthogonal to each other in a plane shape in which the paper surface of FIG. 9 extends, and the z-axis is set so as to penetrate the paper surface of FIG. The x-axis is set to be a positive direction from the lower side toward the upper side toward FIG. The y-axis is set to be a positive direction from the right hand side to the left hand side in FIG. The z axis is set to be a positive direction from the back side to the near side in FIG.

  The shower water discharger WAf is mainly configured by a main body 10f. The main body 10f includes a water supply unit 12f, a throttle unit 14f, an aeration chamber 16f, a water discharge chamber 17f, a discharge hole 18f, and an opening 20f. The water supply part 12f is a part for supplying water to the throttle part 14f, and has an inlet 121f and an end part 122f. The water supply part 12f is formed so as to extend in the positive direction of the y-axis in the drawing. The water supply unit 12f has an inlet 121f formed at one end and an end 122f formed at the other end. The water WF10 introduced into the water supply part 12f from the introduction port 121f flows toward the end part 122f. The diaphragm portion 14f is connected to the end portion 122f. Therefore, the water WF10 introduced into the water supply unit 12f from the introduction port 121f is supplied to the throttle unit 14f.

  The restricting portion 14f is a portion that is provided on the downstream side of the water supply portion 12f, and has a flow passage cross-sectional area that is smaller than that of the water supply portion 12f, and jets the passing water downstream. The throttle part 14f is configured as a flow path having a substantially circular cross section. One end side of the throttle portion 14f is connected to the end portion 122f of the water supply portion 12f. The throttle portion 14f is formed to extend from the end portion 122f of the water supply portion 12f toward the positive direction of the y-axis in the drawing. The water supplied from the water supply unit 12f to the throttle unit 14f is jetted toward the aeration chamber 16f, the water discharge chamber 17f, and the discharge hole 18f with its flow velocity increased. In the present embodiment, the throttle portion 14f corresponds to speed increasing means, and the other end portion of the throttle portion 14f corresponds to an injection hole.

  The air mixing chamber 16f is provided on the downstream side of the throttle portion 14f and between the throttle portion 14f and the discharge hole 18f, and has a wider cross-sectional area than the throttle portion 14f and the discharge hole 18f. Is a part that is almost satisfied. The air mixing chamber 16f includes a first wall portion 161f, a second wall portion 162f, a third wall portion 163f, and a fourth wall portion 164f. The first wall portion 161f and the third wall portion 163f are disposed so as to face each other and be separated from each other. The second wall portion 162f and the fourth wall portion 164f are disposed so as to face each other and be separated from each other. The second wall portion 162f is formed to connect one end side of the first wall portion 161f and one end side of the third wall portion 163f. The fourth wall portion 164f is formed to connect the other end side of the first wall portion 161f and the other end side of the third wall portion 163f.

  As described above, one end side of the throttle unit 14f is connected to the water supply unit 12f. The other end side of the throttle portion 14f is connected to the first wall portion 161f of the air mixing chamber 16f. More specifically, the throttle portion 14f is connected to the other end side of the first wall portion 161f, that is, the fourth wall portion 164f side. The water supplied from the water supply part 12f and injected from the throttle part 14f is injected toward the third wall part 163f.

  One end side of the water discharge chamber 17f is connected to the third wall portion 163f of the air mixing chamber 16f. The other end side of the water discharge chamber 17f is connected to the water discharge hole 18f. The discharge hole 18f is a portion that is provided on the downstream side of the throttle portion 14f and discharges a part of the water jetted from the throttle portion 14f by directly passing it while maintaining its jet direction. The discharge hole 18f is configured as a flow path having a substantially circular cross section. One end of the discharge hole 18f is connected to the water discharge chamber 17f. The water discharge chamber 17f is connected to the other end side of the third wall portion 163f, that is, the fourth wall portion 164f side. The other end side of the discharge hole 18f is opened toward the outside of the main body 10f. A part of the water supplied from the water supply unit 12f and ejected from the throttle unit 14f is ejected as a main water flow WF11 from the ejection hole 18f to the outside of the main body 10f and ejected toward the human body.

  The opening 20f is a part for introducing air into the aeration chamber 16f. The opening 20f is configured as an air flow path having a substantially circular cross section. One end of the opening 20f is connected to the second wall portion 162f of the aeration chamber 16f. More specifically, the opening 20f is connected to the vicinity of the center of the second wall portion 162f. The other end side of the opening 20f is opened toward the outside of the main body 10f.

  As described above, a part of the water jetted from the throttle portion 14f into the air mixing chamber 16f is jetted directly from the discharge hole 18f to the outside. Accordingly, the water jetted from the throttle portion 14f into the aeration chamber 16f is changed in the direction toward the second wall portion 162f by the remaining portion of the water impinging on the third wall portion 163f of the aeration chamber 16f, and the second wall portion 162f. The direction is changed to the first wall 161f side. Therefore, the inside of the aeration chamber 16f is almost filled with the remaining portion of the water injected from the throttle portion 14f into the aeration chamber 16f.

  Particularly in the case of the present embodiment, the third wall 163f is provided with an extending wall 169f that is inclined so as to narrow the flow path toward the first wall 161f and to the water discharge chamber 17f. The remaining portion of the water sprayed into the aeration chamber 16f can be reliably turned to the second wall portion 162f.

  By injecting water from the throttle portion 14f into the air mixing chamber 16f, the vicinity thereof becomes negative pressure, and air is sucked into the water by a so-called ejector effect, and bubble mixed water is generated. At the time of generation of the bubble-mixed water by the ejector effect, the air-mixing chamber 16f is filled with water, while the air-mixing chamber 16f has a negative pressure, so that the air flow AF2 passing through the opening 20f in the air-mixing chamber 16f. And air is introduced from the opening 20f. Therefore, bubble mixed water is continuously generated in the vicinity where water is jetted from the throttle portion 14f. Since a part of the water jetted from the throttle portion 14f is directly discharged to the outside as the main water flow WF11 from the discharge hole 18f, the bubble mixed water generated in the vicinity of the throttle portion 14f is the main water flow WF11 directed directly to the outside. Are discharged from the discharge hole 18f to the outside.

  In the shower water discharger WAf according to the present embodiment described above, the discharge hole 18f is configured to directly pass and discharge part of the water jetted from the throttle portion 14f while maintaining the jetting direction. The water discharged from the discharge hole 18f is sprayed to the outside without largely removing the momentum sprayed from the throttle portion 14f. Therefore, if the discharge hole 18f is arranged so as to face the human body, it is possible to realize water discharge with a feeling of irritation for the human body.

  Further, in the shower water discharger WAf, the air mixing chamber 16f is provided between the throttle portion 14f and the discharge hole 18f, and the inside thereof is substantially filled with water, and air is introduced into the air mixing chamber 16f. Since the opening 20f is also provided, air can be reliably mixed into the water almost filled in the air mixing chamber 16f. Specifically, when water is ejected from the throttle portion 14f, the surrounding area becomes negative pressure, and air is sucked into the water by the so-called ejector effect, and bubble mixed water is generated. At the time of the generation of the bubble mixed water by the ejector effect, the air mixing chamber 16f connected to the throttle portion 14f is almost filled with water, while the inside of the air mixing chamber 16f becomes a negative pressure so that the air mixing chamber 16f is opened. Air is easily introduced from 20f. Therefore, water and air necessary for the generation of bubble-containing water are always supplied, and an environment in which the ejector effect is likely to be generated is formed. Therefore, even if the amount of supplied water is small, bubbles containing a large amount of air The mixed water can be reliably generated. The bubble-containing water generated in this way is configured to be ejected from the discharge hole 18f after being joined with the main water flow WF11 that is jetted from the throttle portion 14f and directly passes through the discharge hole 18f. Thus, it is possible to realize water discharge with a feeling of volume due to water mixed with bubbles. Therefore, even when the amount of water is low, it is possible to achieve both a feeling of volume and a feeling of stimulation, and a high feeling of washing can be obtained.

  Further, in the shower water discharger WAf, a part of the water jetted from the throttle portion 14f is directly discharged from the discharge hole 18f as the main water flow WF11, and the remaining water jetted from the throttle portion 14f fills the aeration chamber 16f. Therefore, it is not necessary to separately supply water for filling the air mixing chamber 16f, and it is possible to realize a large amount of water discharge by the bubble mixing water with a simple configuration. .

  Further, in the shower water discharger WAf, the water jetted from the throttle portion 14f into the aeration chamber 16f is changed in the direction toward the second wall portion 162f with the remaining portion hitting the third wall portion 163f of the aeration chamber 16f. Furthermore, the direction is changed to the first wall portion 161f side by hitting the second wall portion 162f. Therefore, a swirling water flow WF12 is generated in the aeration chamber 16f. In particular, in the present embodiment, a swirl wall 168f is formed between the main water flow WF11 and the second wall portion 162f, and the swirl water flow WF12 is swirled around the swirl wall 168f to generate the swirl water flow WF12. Urging.

  In this way, the traveling direction of the remaining portion of the water jetted from the throttle portion 14f is changed, and the swirling water flow WF12 that is the flow of water returning to the main water flow WF11 is generated in the air mixing chamber 16f. Therefore, the bubble mixed water does not stay in a part of the air mixed chamber 16f, and it is possible to avoid the bubbles in the bubble mixed water from being combined and growing. Accordingly, the bubble-mixed water in which bubbles having the same size are dispersed can be joined to the main water flow WF11 discharged as it is from the throttle portion 14f and discharged without the uneven distribution of bubbles. In addition to the above, it is possible to realize water discharge with a feeling of volume due to water mixed in with bubbles.

  Further, in the shower water discharger WAf, the throttle part 14f and the discharge hole 18f are arranged so that the central axis of the throttle part 14f and the central axis of the discharge hole 18f are located on substantially the same straight line. Therefore, at least a part of the water ejected from the throttle portion 14f can be reliably discharged without cutting off the momentum.

  Further, in the present embodiment, a throttle protrusion 181f is provided on the side of the water discharge chamber 17f and the air mixing chamber 16f of the discharge hole 18f. Thus, by providing the throttle protrusion 181f near the inlet of the discharge hole 18f, the inside of the discharge hole 18f becomes a negative pressure. Therefore, when the bubble-containing water passes through the discharge hole 18f, the bubble-containing water is finely oscillated in the radial direction of the discharge hole 18f inside the discharge hole 18f due to the negative pressure. By this swinging, the water jetted from the discharge hole 18f quickly enters a droplet state. As a result, the load when the discharged water collides with the position to be cleaned increases, and the feeling of irritation is enhanced as compared with the case where the continuous flow collides.

  In addition, the swivel wall 168f in the seventh embodiment can be incorporated in the first to fifth embodiments. As an example, FIG. 10 shows a local cleaning device WAg as a modification in which a swivel wall 168g corresponding to the swivel wall 168f is incorporated in the local cleaning device WA of the first embodiment. FIG. 10 is a cross-sectional view showing a main part of the local cleaning device WAg.

  As shown in FIG. 10, a swivel wall 168 g is provided in the approximate center of the aeration chamber 16 of the main body 10. The swivel wall 168g is formed as a cylindrical wall having a substantially circular cross section. The swirl water flow WF2 is configured to swirl around the swirl wall 168g, and the generation of the swirl water flow WF2 is promoted.

  The embodiments of the present invention have been described above with reference to specific examples. However, the present invention is not limited to these specific examples. In other words, those specific examples that have been appropriately modified by those skilled in the art are also included in the scope of the present invention as long as they have the characteristics of the present invention. For example, the elements included in each of the specific examples described above and their arrangement, materials, conditions, shapes, sizes, and the like are not limited to those illustrated, but can be changed as appropriate. Moreover, each element with which each embodiment mentioned above is provided can be combined as long as technically possible, and the combination of these is also included in the scope of the present invention as long as it includes the features of the present invention.

DESCRIPTION OF SYMBOLS 10: Main body 12: Water supply part 14: Restriction part 16: Air mixing chamber 18: Discharge hole 20: Opening 30: Cover 121: Inlet 122: End part 161: First wall part 162: Second wall part 163: Third Wall portion 164: Fourth wall portion 165: Fifth wall portion 166: Sixth wall portion 301: Discharge hole AF1: Air flow WA: Local cleaning device WF1: Main water flow WF2: Swirl water flow

Claims (10)

A water discharge device for discharging air-mixed water mixed with air,
A water supply unit for supplying water;
Speed increasing means for increasing the speed of water supplied from the water supply unit;
An injection hole provided on the downstream side of the water supply unit, for injecting water accelerated by the speed increasing means to the downstream side;
A discharge hole that is provided on the downstream side of the injection hole and discharges by directly passing at least part of the water injected from the injection hole while maintaining the injection direction;
An aeration chamber provided between the injection hole and the discharge hole,
An opening for introducing air into the aeration chamber is provided,
The air mixing chamber mixes air introduced from the opening into water to form bubble mixed water, and combines the bubble mixed water and water that is sprayed from the spray holes and directly passes through the discharge holes. A water discharging apparatus configured to discharge from the discharge hole. The injection hole and the discharge hole are configured to directly pass through a part of the water injected from the injection hole while maintaining the injection direction, and to discharge from the discharge hole.
The aeration chamber introduces water into the interior of the remainder of the water ejected from the ejection hole, and mixes the air introduced from the opening into the water ejected through the ejection hole. It is configured to form bubble mixed water, and the bubble mixed water and water jetted from the injection hole and directly passing through the discharge hole are merged and discharged from the discharge hole. Item 10. The water discharge device according to Item 1.   The aeration chamber is provided with direction changing means for changing the traveling direction of the remaining portion of the water ejected from the ejection holes so that a swirling flow is generated inside the remaining portion of the water ejected from the ejection holes. The water discharging device according to claim 2, wherein the water discharging device is provided.   The water discharge device according to claim 3, wherein the direction changing means is configured such that the traveling direction of the remaining portion of the water jetted from the jet hole is changed by hitting an inner wall around the discharge hole.   The direction changing means includes an extending wall extending from the inner wall around the discharge hole toward the injection hole so that the traveling direction of the remaining portion of the water injected from the injection hole is changed. The water discharging apparatus according to claim 3, wherein A water supply port for supplying water into the aeration chamber is provided separately from the injection hole,
The aeration chamber mixes the air introduced from the opening into the water therein to form bubble-mixed water, and the bubble-mixed water and water that is sprayed from the spray holes and directly passes through the discharge holes. The water discharge device according to claim 1, wherein the water discharge device is configured to join and discharge from the discharge hole.   The said injection hole and the said discharge hole are arrange | positioned so that the central axis of the said injection hole and the central axis of the said discharge hole may be located on a substantially identical straight line. The water discharging apparatus according to Item 1. The opening is arranged to introduce air into the aeration chamber at a position farthest from the injection hole,
The direction of the air introduced into the aeration chamber from the opening is configured to be opposite to the direction of water ejected from the ejection hole. The water discharging apparatus according to Item 1.   9. The air mixing chamber according to claim 1, wherein the cross-sectional shape of the air mixing chamber is formed in a flat shape in which a direction of water sprayed from the spray hole is a major axis. Water discharge device.   The water discharge device according to any one of claims 1 to 9, wherein the discharge hole is provided with a throttle protrusion on the aeration chamber side.

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